Answer: B. Nuclear transfer!
Explanation:
Nuclear transfer is the process that DNA goes through to get cloned/copied. The cells that make new forms of DNA create a perfect replica.
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Lowercase b is the allele that goes in 3
The aqueous bromothymol blue solution act as a pH indicator and turns blue only in case when the pH of the sample is above or equal to 7.6
Since the pH of the water at the surface of the lakes is higher and ranges between 7.5 to 8.5 the color of bromothymol turn blue.